San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
Are rats comfortable in cold weather?
As winter arrives, the cold increases, and the consequences of this change in weather are vast. Animals like rats will look to survive during these times. The principal necessity for them to be comfortable in these temperatures include refuge and food.
People's homes are perfect for rats to shelter from the cold. They are designed to give the security and benefits needed for a warm environment. As the cold increases, the rat's muscles start tensing, lowering their immune system to the point of making them more likely to get sick.
People and rats living in the same house are a bad combination
The danger of getting diseases is caused by the accumulation of feces that promotes bacteria development all over the house.
These microorganisms produce very dangerous diseases and infections, among them, the best known for its severity is leptospirosis that is caused by ingesting food contaminated with rodents' urine and feces.
The structural damage that living with rats can cause
Damages caused by rats are attributed by the capacity of their jaws to gnaw. They gnaw on materials like wood, plastic or even cables that, despite being hard, these are not an impediment for their teeth. During colder temperatures, their metabolism needs more energy to stay warm.
Among the activities to obtain this energy are eating and gnawing. On many occasions, this can cause dangerous accidents, such as fires thanks to short circuits caused by bitten cables. Economic losses can range from a pair of shoes to the entire house.
Living together with rodents is harmful for your health and bank account. You should know that when winter arrives, the rain and cold will make them find refuge, so you have to take preventative measures as a defense weapon against this urban plague.
